What is a proper noun?

A proper noun is defined as a specific name that identifies a particular person, place, organization, or institution. These names are usually capitalized to distinguish them from general nouns. For example, "New York" refers to a specific city, and "Eiffel Tower" denotes a specific monument, both of which are examples of proper nouns. This capitalization is essential, as it signals to the reader that the word refers to a unique entity, setting it apart from common nouns, which represent general categories. Proper nouns help to provide precise information, allowing for clear communication about specific subjects.